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NASA/Ames Research CenterAC86-7018 (1/25/1986)

Photographer: JPL P-29502C Range: 1.04 million kilometers (650,000 miles) This color photo of Umbriel, the darkest of Uranus' five large moons was synthesized from frames exposed with the Voyager narrow-angle camera's violet and clear filters and has a resolution of 19 km (12 mi.). Umbriel is characterized by the darkest surface and smallest brightness variations of any of the large satellites of Uranus. As seen here, the surface is also generally gray and colorless. Nevertheless, at this resolution, considerable topographic detail is revealed, showing that Umbriel's surface is covered by impact craters. The brightest spot (shown at top near the equator at approxiamately 270 _ longitude) appears as a bright ring. Its geological significance is not yet understood. Umbriel has a diameter of about 1,200 km (750 miles) and orbits 267,000 km (166,000 mi) from Uranus' center. The satellite's name, from Alexander Pope's "Rape of the Lock," means "dark angel".


This item is part of the collection: Ames Research Center Image Library

Mediatype: image
Rights: Public Domain
Creator: NASA/Ames Research Center
Date: 1/25/1986
Year: 1986
What: Voyager
What: Umbriel
What: Uranus
Where: Jet Propulsion Laboratory (JPL)
Identifier: AILS-AC86-7018
Addeddate: 2009-10-06 09:02:24
Publicdate: 2009-10-06 09:28:29
Keywords: What -- Voyager; What -- Umbriel; What -- Uranus; Where -- Jet Propulsion Laboratory (JPL)

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